EP2403687A1 - Schneidewerkzeug mit variablem mechanischem nutzen - Google Patents
Schneidewerkzeug mit variablem mechanischem nutzenInfo
- Publication number
- EP2403687A1 EP2403687A1 EP10749071A EP10749071A EP2403687A1 EP 2403687 A1 EP2403687 A1 EP 2403687A1 EP 10749071 A EP10749071 A EP 10749071A EP 10749071 A EP10749071 A EP 10749071A EP 2403687 A1 EP2403687 A1 EP 2403687A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutting
- tool
- lever
- point
- cutting member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 193
- 230000008901 benefit Effects 0.000 title claims description 30
- 230000003993 interaction Effects 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 description 22
- 230000007423 decrease Effects 0.000 description 13
- 239000000463 material Substances 0.000 description 8
- 241000219000 Populus Species 0.000 description 5
- 238000000418 atomic force spectrum Methods 0.000 description 5
- 230000003247 decreasing effect Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000013138 pruning Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B17/00—Hand cutting tools, i.e. with the cutting action actuated by muscle power with two jaws which come into abutting contact
- B26B17/006—Hand cutting tools, i.e. with the cutting action actuated by muscle power with two jaws which come into abutting contact having cutting edges parallel to a pivot axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B13/00—Hand shears; Scissors
- B26B13/26—Hand shears; Scissors with intermediate links between the grips and the blades, e.g. for remote actuation
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G3/00—Cutting implements specially adapted for horticultural purposes; Delimbing standing trees
- A01G3/02—Secateurs; Flower or fruit shears
- A01G3/025—Secateurs; Flower or fruit shears having elongated or extended handles
- A01G3/0251—Loppers, i.e. branch cutters with two handles
Definitions
- the present invention relates to a hand-operated cutting tool.
- the present invention relates more particularly to a compound action hand-operated cutting tool having a variable leverage mechanism that provides a variable mechanical advantage throughout the cutting stroke, such that the mechanical advantage increases and decreases as the amount of feree required throughout the cutting stroke to cut an object increases and decreases, so that the force applied by a user to the cutting tool throughout the cutting stroke remains relatively constant.
- a hand-operated cutting tool for use in pruning or trimming branches and the like, such as a lopper having a pair of pivoting members such as handles that actuate cutting jaws that cooperate to capture and sever a branch between the jaws.
- Such known loppers typically include a pair of handles pivotally movable between an open and closed position for actuating the cutting jaws between a full open and closed position.
- the known loppers may also devices intended to increase the available leverage provided by the handles, including levers and/or gears that transmit and increase a force from the handles to the jaws.
- the force required to cut increases up to a maximum, at a location approximately 60% through the sample, then decreases at a generally similar rate until approximately 90- 95% through the sample where the force required to complete the cutting operation rapidly decreases.
- Typical cutting tools such as a lopper are sized such that with the tool fully opened, the average human holds the handles with arms abducted and elbows facing outward, and move with a transverse flexion of the arms until the tool is fully closed. There is a reduction in the transverse flexion strength as the arms are abducted and elbows straightened, which tends to result in a decreasing force available from the user where the force required to cut the object is increasing.
- a hand-operated cutting tool such as a lopper
- a variable leverage mechanism that provides a variable mechanical advantage throughout the cutting stroke, such that the mechanical advantage increases and decreases as the amount of force required throughout the cutting stroke to cut an object increases and decreases, so that the force applied by a user to the cutting tool throughout the cutting stroke remains relatively constant.
- a hand-operated cutting tool includes a first cutting member with first and second apertures, and a second cutting member including a third aperture, with the second cutting member at least in part overlying the first cutting member so that the third aperture is in general registry with the first aperture.
- a lever includes a fourth aperture and an arcuate slot.
- a first pivot connection is provided between the cutting members at the first and third apertures, and a second pivot connection is provided between the lever and the first cutting member at the second and fourth apertures.
- a projection extends through the arcuate slot, for effecting a point of interaction between the lever and the second cutting member.
- a hand-operated cutting tool includes first and second cutting members pivotally connected at a first pivot point, a lever having a longitudinal axis and pivotally connected to the first cutting member at a second pivot point, a curved slot on either the lever or the second cutting member, and a projection on the other of the lever or the second cutting member for effecting a point of interaction between the lever and the second cutting member throughout a cutting stroke.
- a hand-operated cutting tool includes first and second cutting members pivotally connected at a first pivot point, a lever having a longitudinal axis and pivotally connected to the first cutting member at a second pivot point, and a translatable curvilinear pivot connection between the lever and the second cutting member.
- FIGURE IA is a schematic image of a hand-operated cutting tool, such as a lopper, in a full open position (shown with handles approximately 150 degrees apart) according to an exemplary embodiment.
- FIGURE IB is a schematic image of a hand-operated cutting tool, such as a lopper, in a further open position (shown with handles approximately 80 degrees apart) according to an exemplary embodiment.
- FIGURE 1C is a schematic image of a hand-operated cutting tool, such as a lopper, in a partially open position (shown with handles approximately 60 degrees apart) according to an exemplary embodiment.
- FIGURE ID is a schematic image of a hand-operated cutting tool, such as a lopper, in a full closed position (shown with handles approximately 10 degrees apart) according to an exemplary embodiment.
- FIGURE 2 is a schematic image of a lever device for a hand-operated cutting tool, according to an exemplary embodiment.
- FIGURE 3 is a schematic image of a first cutting member for a hand-operated cutting tool, according to an exemplary embodiment.
- FIGURE 4 is a schematic image of a second cutting member for a hand-operated cutting tool, according to an exemplary embodiment.
- FIGURE 5 A is a schematic image of a leverage mechanism for a hand-operated cutting tool, such as a lopper, in a full open position according to the exemplary embodiment of FIGURE IA.
- FIGURE 5B is a schematic image of a leverage mechanism for a hand-operated cutting tool, such as a lopper, in a further open position according to the exemplary embodiment of FIGURE IB.
- FIGURE 5C is a schematic image of a leverage mechanism for a hand-operated cutting tool, such as a lopper, in a partially open position according to the exemplary embodiment of FIGURE 1C.
- FIGURE 5D is a schematic image of a leverage mechanism for a cutting hand- operated cutting tool, such as a lopper, in a full closed position according to the exemplary embodiment of FIGURE ID.
- FIGURE 6 is a graphical representation of feree curve data for cutting an object comprising a first material, and a power curve representation of variable mechanical advantage provided by the variable leverage mechanism according to an exemplary embodiment.
- FIGURE 7 is a graphical representation of feree curve data for cutting an object comprising a second material, and a power curve representation of variable mechanical advantage provided by the variable leverage mechanism according to an exemplary embodiment.
- a hand-operated cutting tool shown for example as a "lopper" having a pair of handles operable to actuate a pair of cutting members, is illustrated having a variable leverage mechanism that includes a lever device with a curvilinear slot (e.g. arcuate, curved, etc.).
- the lever is pivotally connected to a first cutting member of the cutting tool at a pivot point and is slidably connected to a second cutting member of the cutting tool along the slot.
- the configuration of the curvilinear slot in the lever provides an increased mechanical advantage through the portions of the tool's cutting stroke (e.g.
- the present inventors have determined that the resistance to cutting presented by an object such as a generally round, fibrous growth (e.g. tree limb, etc.) varies as a function of the penetration of the cutting members into the growth.
- the maximum resistance is generally encountered at a predetermined point in the cutting stroke through the maximum- sized object for which the tool is designed.
- the leverage mechanism is designed to provide maximum leverage (i.e. mechanical advantage) at the point in the cutting stroke corresponding to that maximum resistance.
- the first and second cutting members comprise a hook and a blade, respectively, and maximum leverage is provided in the range of approximately 60 to 62 percent through the cutting stroke.
- This point of maximum mechanical advantage corresponds to the peak of the mechanical advantage curve ("power curve") of the tool, as will be further described.
- the pivotal connection between the lever device and the first cutting member i.e. the hook
- the pivotal connection between the lever device and the first cutting member is preferably substantially flush with the inner surface of the cutting member to avoid interference with the pivotal movement of the second cutting member (i.e. the blade).
- FIGURES 1 A-ID a hand-operated cutting device, shown for example as a lopper 10, according to an exemplary embodiment.
- Lopper 10 is shown to include a pair of handles 12 and a pair of cutting members (e.g. jaws, shearing members, etc.).
- a first cutting member 20 has a first end 22 having a first cutting device 24 (shown for example as a hook) and a second end 26, and a first aperture 28 and a second aperture 30.
- the second cutting member 40 has a first end 42 having a corresponding second cutting device 44 (shown for example as a blade) that engages the first cutting device 24 in a shearing relationship, and a second end 46, and a third aperture 48.
- the first cutting member is pivotally coupled to the second cutting member by a first pivot connection 16 (e.g. pivot point, etc.) defined by the first aperture 28 and the third aperture 48.
- the lopper 10 is also shown to include a variable leverage mechanism 60 including a lever device 62 with a fourth aperture 64 and a curvilinear slot 66 for providing variable leverage (i.e. variable mechanical advantage) corresponding to the variable force required throughout the cutting stroke to sever an object (i.e. the variable force required by a user holding the handles 12 of the tool 10 to overcome the variable resistance offered by the object held between the cutting members 20, 40 during the cutting operation as the user moves the handles 12 to actuate the cutting members 20, 40 from the open position to the closed position).
- the lever device 62 is pivotally coupled to the first cutting member 20 at a second pivot connection 18 (e.g.
- pivot point, etc. defined by the second aperture 30 and the fourth aperture 64, and is pivotally/slidably coupled to the second cutting member 40 at a sliding (e.g. dynamic, translatable, etc.) pivot connection, shown for example to include a projection 50 (e.g. pin, lug, bolt, stud, etc.) coupled proximate the second end 46 of the second cutting member 40 that traverses within the slot 66, to effect a point of interaction between the lever device 62 and the second cutting member 40.
- a projection 50 e.g. pin, lug, bolt, stud, etc.
- the first cutting member 20 and the lever device 62 are each shown to include a tang 14 operable to receive a first and second handle 12 (or other suitable extension) for gripping by a user to actuate the cutting members to sever an object.
- any suitable handle arrangement may be used (e.g. integral, separately attached, etc.) according to other embodiments.
- Lever device 62 includes a first end 68 having fourth aperture 64 defining a center point 70, and which corresponds to the second pivot connection between the lever device 62 and the first cutting member 20.
- Lever device 62 also includes a second end 72 having tang 14, and a longitudinal axis 74 defined by a line extending through the tang 14 and the center point 70 of fourth aperture 64.
- Lever device 62 further includes curvilinear slot 66, shown to include a first end center point 76 and a second end center point 78.
- slot 66 is an arcuate slot defined by a constant slot radius R.
- Slot radius R is sized to correspond to the size, dimensions and geometry of the other portions of the cutting tool.
- slot radius R is within a range of approximately 2.50 inches - 3.00 inches, and more particularly within a range of approximately 2.70 inches - 2.80 inches, and more particularly still, slot radius R is approximately 2.75 inches.
- slot radius R may have any other suitable dimension or length.
- slot radius R may be variable (i.e. non-constant) from the first end center point to the second end center point.
- First end center point 76 of slot 66 is shown by way of example as located at a distance Dl from the center point 70 of fourth aperture 64, and at an angle Al from longitudinal axis .
- Second end center point 78 of slot 66 is shown by way of example as located at a distance D2 from the center point 70 of fourth aperture 64, and at an angle A2 from the longitudinal axis 74.
- Distances Dl and D2 and angles Al and A2 are dependent upon the size and geometry of the cutting device.
- distance Dl is within a range of approximately 1.00 inches - 1.50 inches, and more particularly within a range of approximately 1.20 inches - 1.3 inches, and more particularly still, distance Dl is approximately 1.25 inches.
- distance D2 is within a range of approximately 2.25 inches - 2.75 inches, and more particularly within a range of approximately 2.40 inches - 2.65 inches, and more particularly still, distance D2 is approximately 2.56 inches.
- angle Al is within a range of approximately zero (0) degrees and two (2) degrees, and more particularly, angle Al is approximately one (1) degree.
- angle A2 is within a range of approximately 10 degrees and 13 degrees, and more particularly, angle A2 is approximately 11.39 degrees.
- distances Dl and D2, and angles Al and A2 may be any suitable distance or angle corresponding to the size, shape and geometry of the components of the cutting tool so that a variable mechanical advantage is created that permits a more uniform force applied by a user throughout the cutting stroke to sever an object between the first and second cutting members.
- First cutting member 20 of the cutting tool 10 is shown in further detail according to an exemplary embodiment.
- First cutting member 20 includes hook portion 24 at the first end 22 and tang 14 at second end 26, and a longitudinal axis 32 defined by a line extending through the tang 14 and a center point 29 of first aperture 28, which corresponds to the first pivot connection.
- Second aperture 30 corresponding to the second pivot point has a center point 31. The spacing of the first and second pivot points is such that the center point 31 of the second aperture 30 is located a distance D3 from the center point 29 of first aperture 28, and forms an angle A3 with longitudinal axis 32. Distance D3 and angle A3 are dependent upon the size and geometry of the cutting device.
- distance D3 is within a range of approximately 1.50 inches - 2 inches, and more particularly within a range of approximately 1.70 inches - 1.80 inches, and more particularly still, distance D3 is approximately 1.75 inches.
- angle A3 is within a range of approximately fifty (50) degrees and sixty (60) degrees, and more particularly within a range of approximately fifty-three (53) degrees and fifty-seven (57) degrees, and more particularly, angle A3 is approximately fifty- five (55) degrees.
- distance D3, and angle A3 may be any suitable distance or angle corresponding to the size, shape and geometry of the components of the cutting tool.
- Second cutting member 40 includes blade portion 44 at first end 42 and projection 50 disposed proximate second end 46.
- Second cutting member 40 also includes third aperture 48 having a center point 49 and corresponds to the first pivot connection. The spacing of the center point 49 of the third aperture 48 is located a distance D4 from the center point 51 of projection 50.
- Distance D4 is dependent upon the size and geometry of the cutting device. According to one embodiment, distance D4 is within a range of approximately 2.50 inches - 3.50 inches, and more particularly within a range of approximately 2.75 inches - 3.25 inches, and more particularly still, distance D4 is approximately 3.00 inches.
- variable leverage mechanism 60 of the cutting tool 10 throughout the cutting stroke is shown according to an exemplary embodiment.
- the variable leverage mechanism 60 is intended to provide a variable mechanical advantage that results in a more uniform (e.g. more constant force) application by a user as the tool moves from the open position to the closed position during the cutting stroke to cut an object that offers a varying level of resistance through the cutting stroke.
- experimental data is shown representing the resistance force offered by two sets of objects throughout the cutting stroke of the cutting tool, and the variable mechanical advantage provided by the variable leverage mechanism 60 according to the embodiment of FIGURES 2-5D.
- each force curve shows generally that the force required at the handles 12 to overcome the resistance needed to sever the samples begins at zero (0) (corresponding to the cutting tool in a full open position) and increases to a maximum at a point that is within a range of approximately 55-62 percent of the cutting stroke, and then decreases at a similar rate until a point that is within a range of approximately 90-95 percent of cutting stroke, after which the force drops rapidly until the cutting tool is in the full closed position.
- variable mechanical advantage provided by the variable leverage mechanism 60 using a lever device 62 with curved slot 66 is represented as a "power curve".
- a constant level of mechanical advantage throughout the cutting stroke would correspond to a horizontal line on the graph of FIGURE 6.
- lowering or raising the location of a user's hands on the handles would simply shift the power curve on the graph upward or downward, respectively.
- the power curve illustrates how the mechanical advantage provided by the variable leverage mechanism 60 increases as the force required to cut the poplar samples increases to a maximum (as shown by the inflection point of the power curve) at a point that is approximately 58-60% of the cutting stroke, and then decreases as the force required to cut the samples decreases until the samples are severed at the full closed position.
- FIGURE 7 provides a representation of the force applied by a user to the handles 12 of the cutting tool 10 throughout the cutting stroke that was required to cut samples of formed from a different wood material.
- five generally cylindrical oak samples are represented graphically as five separate force curves.
- each force curve shows generally that the force required at the handles to overcome the resistance needed to sever the oak samples begins at zero (0) (corresponding to the cutting tool in a full open position) and increases to a maximum at a point that is within a range of approximately 62-65 percent of the cutting stroke, which the Applicants believe reflects the force associated with cutting a 'harder' wood (i.e.
- the power curve illustrates how the mechanical advantage provided by the variable leverage mechanism 60 with the lever device 62 having a curvilinear slot 66 is also tailored for use with 'harder' materials such as oak.
- the power curve is lower in the region surrounding its maximum than at the extremities of the curve. Additionally, the power curve at the start of the cutting stroke is lower than at the end of the cutting stroke. This allows for the power curve to meet the needs of a range of force requirements of various samples, including 'harder' materials such as oak.
- the positioning and configuration of the curvilinear slot 66 results in a power curve that increases and decreases to correspond to the amount of force required by a user to cut a typical samples of various materials between the cutting members of the cutting tool.
- the resulting power curve thus permits a user to cut object of various materials using a more uniform (e.g. more consistent) amount of feree throughout the cutting stroke as a user's arms move from an abducted position (e.g. elbows out in the example of a lopper) to an adducted position (e.g. elbows in for the example of a lopper).
- the power curve of the variable leverage mechanism 60 results from the variable mechanical advantage produced by the lever device 62 having the curvilinear slot 66 that translatably engages the second cutting member 40 at a point of interaction along the slot 66, as shown in more detail in FIGURES 5A-5D.
- the projection 50 at the second end 46 of the second cutting member 40 engages the slot 66 at a point of interaction that corresponds to the second end center point 78 of the slot 66, which is also intended to provide a travel stop for the open position of the tool.
- the projection 50 pivotally and slidably translates along the slot 66 toward the first end center point 76 (see FIGURE 5B).
- the projection 50 reaches the first end center point 76 of the slot 66, where the projection 50, and the first and second pivot points 16, 18 are aligned in a common plane 80 corresponding to maximum mechanical advantage (as represented by the peak on the power curve of FIGURES 6 and 7).
- the projection 50 pivotally and slidably translates only a short distance back along the slot 66 from the first end center point 76, which corresponds to the slower rate of decrease in mechanical advantage (as represented in the power curves of FIGURES 6 and 7) provided in the remaining approximately 40% of the cutting stroke (see FIGURE 5D).
- a hand-operated cutting tool includes a pair of handles 12 operable to actuate a pair of cutting members 20, 40.
- a variable leverage mechanism 60 includes a lever device 62 with a curvilinear slot 66 (e.g. arcuate, curved, etc.). The lever device 62 is pivotally connected to a first cutting member 20 at a first pivot point 16 and is slidably connected to a second cutting member 40 along the slot 66.
- the configuration of the curvilinear slot 66 in the lever device 62 provides an increasing mechanical advantage through the portions of the tool's cutting stroke that correspond to increased force required to cut an object, and provides a decreasing mechanical advantage through the portions of the tool's cutting stroke that correspond to decreased force required to cut the object, so that the force required by a user to cut the object remains more consistent than the varying force typically required with conventional cutting tools to cut an object.
- the construction and arrangement of the elements of the hand-operated cutting tool, shown as a lopper, with a variable leverage mechanism having a lever device with curvilinear slot as shown schematically in the embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible without materially departing from the novel teachings and advantages of the subject matter recited.
- the position and characteristics of the curvilinear slot on the lever device may be varied as necessary to accommodate changes in the dimensions, shape and geometry of the other components of the cutting tool.
- the orientation of the projection extending from (or otherwise coupled to) the second end of the second cutting member and the curved slot in the lever device may be reversed, such that the curved slot is provided in the second cutting member and the projections extends from (or is otherwise coupled to) the lever.
- the handles extending from the first cutting member and the lever device may be any suitable size and shape to correspond to the specific type of cutting devices and type of cutting tool (e.g. loppers, shears, pruners, trimmers, etc.).
- any process or method steps may be varied or re- sequenced according to alternative embodiments.
- any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures.
- Other substitutions, modifications, changes and omissions may be made in the design, operating configuration and arrangement of the preferred and other exemplary embodiments without departing from the spirit of the present invention as expressed in the appended claims.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental Sciences (AREA)
- Scissors And Nippers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/397,193 US8046924B2 (en) | 2009-03-03 | 2009-03-03 | Cutting tool with variable mechanical advantage |
PCT/US2010/020126 WO2010101666A1 (en) | 2009-03-03 | 2010-01-05 | Cutting tool with variable mechanical advantage |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2403687A1 true EP2403687A1 (de) | 2012-01-11 |
EP2403687A4 EP2403687A4 (de) | 2012-08-08 |
EP2403687B1 EP2403687B1 (de) | 2013-07-03 |
Family
ID=42676968
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20100749071 Not-in-force EP2403687B1 (de) | 2009-03-03 | 2010-01-05 | Schneidewerkzeug mit variablem mechanischen nutzen |
Country Status (3)
Country | Link |
---|---|
US (2) | US8046924B2 (de) |
EP (1) | EP2403687B1 (de) |
WO (1) | WO2010101666A1 (de) |
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US8046924B2 (en) * | 2009-03-03 | 2011-11-01 | Fiskars Brands, Inc. | Cutting tool with variable mechanical advantage |
US20110192035A1 (en) * | 2010-02-09 | 2011-08-11 | Wen Ger Chen | Compound-action pruning tools |
DE102011018464B4 (de) * | 2010-04-27 | 2019-03-21 | Irwin Industrial Tool Co. (N.D.Ges. Des Staates Delaware) | Optimiertes Übersetzungsschneidwerkzeug |
US9107351B2 (en) * | 2010-07-26 | 2015-08-18 | Robert Seloff | Lopper devices for pruning trees and brushes |
US8572853B2 (en) * | 2010-12-16 | 2013-11-05 | Ho Cheng Garden Tools Co., Ltd. | Garden shears |
CN201907074U (zh) * | 2010-12-27 | 2011-07-27 | 润联(天津)五金工具有限公司 | 具有偏置钳口的卡压工具 |
FI124699B (fi) | 2011-06-30 | 2014-12-15 | Iittala Group Oy Ab | Leikkuutyökalu |
US8713804B2 (en) * | 2011-08-24 | 2014-05-06 | Jiin Haur Industrial Co. Ltd. | Gardening scissors |
US20130247385A1 (en) * | 2012-03-23 | 2013-09-26 | The National Telephone Supply Company | Compound wire rope cutter |
USD717133S1 (en) | 2012-12-17 | 2014-11-11 | Fiskars Brands Finland Oy Ab | Garden tool |
JP6069105B2 (ja) * | 2013-06-04 | 2017-01-25 | 株式会社永木精機 | 線材用カッター |
CN109258162B (zh) * | 2013-11-20 | 2019-11-08 | 菲斯科尔思品牌有限公司 | 一种手操作切割工具及操作该手操作切割工具的方法 |
US9591808B2 (en) * | 2014-02-26 | 2017-03-14 | Thomas Lin | Gardening shears capable of switching cutting modes |
JP5778826B1 (ja) * | 2014-05-26 | 2015-09-16 | 株式会社東亜インターシステム | 手動式ケーブルカッター |
USD753455S1 (en) | 2014-07-30 | 2016-04-12 | Milwaukee Electric Tool Corporation | Cutting tool |
WO2019003120A1 (en) * | 2017-06-29 | 2019-01-03 | King's Flair Marketing Limited | SHEAR TOOL WITH COMPOUND LEVER MECHANISM |
USD890582S1 (en) | 2018-03-06 | 2020-07-21 | Fiskars Finland Oy Ab | Tool handle |
USD890584S1 (en) | 2018-03-06 | 2020-07-21 | Fiskars Finland Oy Ab | Lopper |
USD873632S1 (en) | 2018-03-06 | 2020-01-28 | Fiskars Finland Oy Ab | Shears |
US20220312682A1 (en) * | 2021-03-31 | 2022-10-06 | Techtronic Cordless Gp | Hand tool with shear assembly |
US11540449B1 (en) * | 2021-07-01 | 2023-01-03 | Wise Center Precision Appliance Co., Ltd. | Gardening shears having effort-saving structure |
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2010
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- 2010-01-05 WO PCT/US2010/020126 patent/WO2010101666A1/en active Application Filing
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2013
- 2013-10-31 US US14/068,842 patent/USRE45488E1/en active Active
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Also Published As
Publication number | Publication date |
---|---|
WO2010101666A1 (en) | 2010-09-10 |
EP2403687B1 (de) | 2013-07-03 |
US8046924B2 (en) | 2011-11-01 |
EP2403687A4 (de) | 2012-08-08 |
USRE45488E1 (en) | 2015-04-28 |
US20100223794A1 (en) | 2010-09-09 |
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